That reads like you want it only Open or Closed and no where in between even with the commands Raise and Lower. Did I misunderstand? Also, you have Raise and Lower defined like this
Lower=(+100),Raise=(-100) Which means they will move to either fully open or closed position with the commands Raise, Lower.
Normally usage for Raise and Lower is, for example, (+/-10) so when commanding Raise, Lower the blinds move +/-10% from the current position.
This thread is for controlling your Echo devices using openHAB but in your question you are using Alexa skill’s to control your blinds. The thread for skills discussions is here:
… Something I knocked up earlier 
